feat(logging): add NanoShare wide event instrumentation

- Register quart_common wide-event logging during app setup so every HTTP request emits one canonical structured event.

- Replace the inline security middleware with reusable quart_common security middleware wiring and move skip path configuration into app constants.

- Add NanoShare-specific wide-event context for health checks, auth/error handlers, file list/edit/delete/serve flows and upload outcomes.

- Rename runtime logging/project metadata from simple-picoshare to nanoshare where it is emitted in service context.

- Update my_helpers and quart_common submodules for Convex/wide-event integration and reusable security middleware support.

- Add NanoShare middleware tests covering safe user context, client IP enrichment, missing Convex handling and Convex security lookup failures.

routes/api/health.py

@@ -1,6 +1,7 @@
 from my_modules.decoratory.header import format_response, feature_flag_required
 from my_modules.app.setup import LIMITER
 from my_modules.app.logger import logger
+from quart_common.web.wide_event import add_wide_event_context
 
 from quart import Blueprint, current_app
 
@@ -11,8 +12,10 @@ health_bp = Blueprint("health", __name__)
 @feature_flag_required("convex_health", fallback=False, status_code=404)
 @format_response
 async def get_convex_health_for_api():
+  add_wide_event_context(health={"check": "convex"})
   runtime = getattr(current_app, "convex_runtime", None)
   if runtime is None:
+    add_wide_event_context(health={"status": "unavailable", "reason": "runtime_missing"})
     return {
       "status": "unavailable",
       "description": "Convex runtime is not attached to app",
@@ -20,6 +23,7 @@ async def get_convex_health_for_api():
 
   is_alive = await runtime.is_alive()
   metrics = runtime.get_metrics()
+  add_wide_event_context(health={"status": "ok" if is_alive else "unhealthy"})
 
   return {
     "alive": is_alive,